Details

Details

Title A Phase 3, Randomized, Controlled, Open-label, Multicenter, Safety and Efficacy Study of Dexamethasone Plus MLN9708 or Physician’s Choice of Treatment Administered to Patients With Relapsed or Refractory Systemic Light Chain (AL) Amyloidosis

IRB MLNM1A13

CC 14-767

Hospital Main Campus

Phase Phase 3

Disease Amyloidosis

Drug Dexamethasone, MLN9708

Description

Description

Primary Objectives
  1. To determine whether dexamethasone plus MLN9708 improves hematologic response (PR + VGPR + CR) versus a physician's choice of a chemotherapy regimen as selected from the list of offered treatment options in patients diagnosed with relapsed or refractory AL amyloidosis.
  2. To determine whether dexamethasone plus MLN9708 improves 2-year vital organ (that is, heart or kidney) deterioration and mortality rate versus a physician's choice of a chemotherapy regimen as selected from the list of offered treatment options in patients diagnosed with relapsed or refractory AL amyloidosis. Cardiac deterioration is defined as the need for hospitalization for heart failure. Kidney deterioration is defined as progression to end-stage renal disease (ESRD) with the need for maintenance dialysis or renal transplantation.
Secondary Objectives
  1. To determine OS
  2. To determine the complete hematologic response rate (CR)
  3. To determine progression-free survival (PFS)
  4. To measure hematologic disease PFS
  5. To determine best response in the vital organs allowed at study entry (heart and kidney)
  6. To determine time to vital organ deterioration or death
  7. To measure vital organ PFS
  8. To measure the duration of hematologic response (DOR)
  9. To evaluate safety
  10. To measure time to treatment failure (TTF)
  11. To measure time to subsequent anticancer therapy
  12. To describe the impact of treatment on quality of life (QOL) using the Medical Outcomes Study 36- item Short Form General Health Survey (SF-36 v2) (Section 15.3), FACT-neurotoxicity subscale (FACT/GOG-Ntx) (Section 15.4) and a symptom scale questionnaire (Section 15.5)
  13. To evaluate health utilization (HU) and to collect EuroQol 5-Dimensional (EQ-5D) (Section15.9) data
  14. To collect PK data to contribute to population PK analyses
Inclusion Criteria

Inclusion Criteria

  1. Male or female patients 18 years or older.
  2. Biopsy-proven diagnosis of AL amyloidosis according to the following standard criteria:
    1. Histochemical diagnosis of amyloidosis, as based on tissue specimens with Congo red staining with exhibition of an apple-green birefringence
    2. If clinical and laboratory parameters insufficient to establish AL amyloidosis or in cases of doubt, amyloid typing may be necessary (see Section 15.1)
  3. Measurable disease as defined by serum differential free light chain concentration (dFLC, difference between amyloid forming [involved] and nonamyloid forming [uninvolved] free light chain [FLC]) ≥ 50 mg/L.
  4. Objective, measurable major (cardiac or renal ) organ amyloid involvement as defined as follows (amyloid involvement of at least 1 required)(20)
    1. Cardiac involvement is defined as the presence of a mean left ventricular wall thickness on echocardiogram greater than 12 mm in the absence of other potential causes of left ventricular hypertrophy (controlled hypertension is allowed) with a noncardiac biopsy showing amyloid, or a positive cardiac biopsy in the presence of clinical or laboratory evidence of involvement. If there is isolated cardiac involvement, then typing of amyloid deposits is recommended.
    2. Renal involvement is defined as proteinuria (predominantly albumin) >0.5 g/day in a 24- hour urine collection. Note: Amyloid involvement of other organ systems is allowed, but not required.
  5. Must be relapsed or refractory after 1 or 2 prior therapies. For this protocol, relapsed is defined as PD documented more than 60 days after last dose; refractory is defined as documented absence of hematologic response or hematologic progression on or within 60 days after last dose of prior therapy.
    1. Patient must not have been previously treated with proteasome inhibitors. (The sponsor reserves the right to open the study to proteasome inhibitor-exposed patients in the future, at some time point after the first IA. In that case, the patient may not be refractory to proteasome inhibitor therapy
    2. Given that the physician may select from an offered list of regimens to treat a specific patient, the patient may be refractory to an agent/s listed within the list of offered treatment choices
    3. Must have recovered (ie, ≤ Grade 1 toxicity or patient's baseline status) from the reversible effects of prior therapy
    4. If a patient has received a transplant as his/her first-line therapy, he/she must be at least 3 months posttransplantation and recovered from the side effects of the stem cell transplant
  6. Patient must meet criteria for 1 of the following AL Amyloidosis Risk Stages (as defined by NT-proBNP cut-off of < 332 pg/mL and troponin T cut-off of 0.035 ng/mL as thresholds):
    1. Stage 1: both NT-proBNP and troponin T under threshold
    2. Stage 2: either NT-proBNP or troponin T (but not both) over threshold;
    3. Stage 3: both NT-proBNP and troponin T over threshold (but NT-proBNP < 8000 pg/mL)
  7. ECOG Performance Status ≤ 2
  8. Clinical laboratory values:
    1. Absolute neutrophil count ≥ 1000/μL
    2. Platelet count ≥ 75,000/μL
    3. Total bilirubin ≤ 1.5 x ULN, except for patients with Gilbert's syndrome as defined by > 80% unconjugated bilirubin and total bilirubin ≤ 6 mg/dL
    4. Alkaline phosphatase ≤ 5 x ULN,
    5. ALT or AST ≤3 x ULN
    6. Calculated creatinine clearance ≥ 30 mL/min
  9. Female patients who:
    1. If they are of childbearing potential, agree to practice 2 effective methods of contraception, at the same time, from the time of signing the informed consent through 90 days after the last dose of study treatment, AND
    2. Must also adhere to the guidelines of any treatment-specific pregnancy prevention program, if applicable, OR
    3. Agree to practice true abstinence when this is line with the preferred and usual lifestyle of the subject. (Periodic abstinence [eg, calendar, ovulation, symptothermal, post-ovulation methods] and withdrawal are not acceptable methods of contraception.)

    Male patients, even if surgically sterilized (ie, status post vasectomy), who:

    1. Agree to practice effective barrier contraception during the entire study treatment period and through 90 days after the last dose of study drug, AND
    2. Must also adhere to the guidelines of any treatment-specific pregnancy prevention program, if applicable, OR
    3. Agree to practice true abstinence when this is line with the preferred and usual lifestyle of the subject. (Periodic abstinence [eg, calendar, ovulation, symptothermal, post-ovulation methods] and withdrawal are not acceptable methods of contraception.)

  10. Voluntary written consent must be given before performance of any study-related procedure not part of standard medical care with the understanding that consent may be withdrawn by the patient at any time without prejudice to future medical care.
Exclusion Criteria

Exclusion Criteria

  1. Amyloidosis due to mutations of the transthyretin gene or presence of other non-AL amyloidosis.
  2. Female patients who are lactating, breastfeeding, or pregnant.
  3. Medically documented cardiac syncope, uncompensated NYHA Class 3 or 4 congestive heart failure (Section 15.6), myocardial infarction within the previous 6 months, unstable angina pectoris, clinically significant repetitive ventricular arrhythmias despite antiarrhythmic treatment, or severe orthostatic hypotension or clinically important autonomic disease.
  4. Clinically overt multiple myeloma, according to the IMWG criteria with at least 1 of the following:
    1. Bone lesions
    2. Hypercalcemia, defined as a calcium of > 11 mg/dL
  5. Inability to swallow oral medication, inability or unwillingness to comply with the drug administration requirements, or GI procedure that could interfere with the oral absorption or tolerance of treatment.
  6. Requirement for other concomitant chemotherapy, immunotherapy, radiotherapy, or any ancillary therapy considered to be investigational or which would be considered as a treatment of AL amyloidosis. However, patients may be on chronic steroids (maximum dose 20 mg/day prednisone or equivalent [Section 15.7]) if they are being given for disorders other than amyloidosis (eg, adrenal insufficiency, rheumatoid arthritis, etc.).
  7. Comorbid systemic illnesses or other severe concurrent disease which, in the judgment of the investigator, would make the patient inappropriate for entry into this study or interfere significantly with the proper assessment of safety and toxicity of the prescribed regimens.
  8. Ongoing or active infection, known HIV positive, active hepatitis B or C infection.
  9. Psychiatric illness/social situations that would limit compliance with study requirements.
  10. Known allergy to boron, MLN9708, any of the study treatments, their analogues, or excipients.
  11. Systemic treatment with strong CYP3A inducers (rifampin, rifapentine, rifabutin, carbamazepine, phenytoin, phenobarbital), or use of Ginkgo biloba or St. John's wort within 14 days before the first dose of study treatment.
  12. Diagnosed or treated for another malignancy within 5 years before study enrollment or previously diagnosed with another malignancy and have any evidence of residual disease. Patients with nonmelanoma skin cancer or carcinoma in situ of any type are not excluded if they have undergone complete resection.